Why is Rabeprazole Sodium Enteric-coated Tablets more expensive than Omeprazole Enteric-coated Tablets?

Rabeprazole sodium is still within the patent validity period. If a manufacturer produces, it must pay royalties before it can produce. The patent protection period of omeprazole has expired, so there is no need to pay patent fees, so the cost is low and the price is low. In fact, the effect is similar, even expensive drugs are not necessarily better than cheap drugs.